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tests/pm_pc8: add debugfs/sysfs tests

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They don't really exercise any particular special code path for PC8,
but the runtime D3 code will touch these code paths, so we'll need the
tests.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2013-11-08 18:29:57 -02:00
parent 0fbb834646
commit 3775eae051
1 changed files with 121 additions and 0 deletions
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121
tests/pm_pc8.c
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@ -780,6 +780,121 @@ static void register_compare_subtest(void)
compare_registers(&pre_pc8, &post_pc8);
}
static void read_full_file(const char *name)
{
int rc, fd;
char buf[128];
igt_assert_f(pc8_plus_enabled(), "File: %s\n", name);
fd = open(name, O_RDONLY);
if (fd < 0)
return;
do {
rc = read(fd, buf, ARRAY_SIZE(buf));
} while (rc == ARRAY_SIZE(buf));
rc = close(fd);
igt_assert(rc == 0);
igt_assert_f(pc8_plus_enabled(), "File: %s\n", name);
}
static void read_files_from_dir(const char *name, int level)
{
DIR *dir;
struct dirent *dirent;
char *full_name;
int rc;
dir = opendir(name);
igt_assert(dir);
full_name = malloc(PATH_MAX);
igt_assert(level < 128);
while ((dirent = readdir(dir))) {
struct stat stat_buf;
if (strcmp(dirent->d_name, ".") == 0)
continue;
if (strcmp(dirent->d_name, "..") == 0)
continue;
snprintf(full_name, PATH_MAX, "%s/%s", name, dirent->d_name);
rc = lstat(full_name, &stat_buf);
igt_assert(rc == 0);
if (S_ISDIR(stat_buf.st_mode))
read_files_from_dir(full_name, level + 1);
if (S_ISREG(stat_buf.st_mode))
read_full_file(full_name);
}
free(full_name);
closedir(dir);
}
/* This test will probably pass, with a small chance of hanging the machine in
* case of bugs. Many of the bugs exercised by this patch just result in dmesg
* errors, so a "pass" here should be confirmed by a check on dmesg. */
static void debugfs_read_subtest(void)
{
const char *path = "/sys/kernel/debug/dri/0";
DIR *dir;
dir = opendir(path);
igt_require_f(dir, "Can't open the debugfs directory\n");
closedir(dir);
disable_all_screens(&ms_data);
igt_assert(pc8_plus_enabled());
read_files_from_dir(path, 0);
}
/* Read the comment on debugfs_read_subtest(). */
static void sysfs_read_subtest(void)
{
const char *path = "/sys/devices/pci0000:00/0000:00:02.0";
DIR *dir;
dir = opendir(path);
igt_require_f(dir, "Can't open the sysfs directory\n");
closedir(dir);
disable_all_screens(&ms_data);
igt_assert(pc8_plus_enabled());
read_files_from_dir(path, 0);
}
/* Make sure we don't suspend when we have the i915_forcewake_user file open. */
static void debugfs_forcewake_user_subtest(void)
{
int fd, rc;
igt_require(!(IS_GEN2(ms_data.devid) || IS_GEN3(ms_data.devid) ||
IS_GEN4(ms_data.devid) || IS_GEN5(ms_data.devid)));
disable_all_screens(&ms_data);
igt_assert(pc8_plus_enabled());
fd = open("/sys/kernel/debug/dri/0/i915_forcewake_user", O_RDONLY);
igt_require(fd);
igt_assert(pc8_plus_disabled());
rc = close(fd);
igt_assert(rc == 0);
igt_assert(pc8_plus_enabled());
}
int main(int argc, char *argv[])
{
bool do_register_compare = false;
@ -807,6 +922,12 @@ int main(int argc, char *argv[])
batch_subtest();
igt_subtest("i2c")
i2c_subtest();
igt_subtest("debugfs-read")
debugfs_read_subtest();
igt_subtest("debugfs-forcewake-user")
debugfs_forcewake_user_subtest();
igt_subtest("sysfs-read")
sysfs_read_subtest();
igt_subtest("stress-test")
stress_test();
igt_subtest("modeset-lpsp-stress")